Biology, 28.06.2019 21:00 organicmemez
Acolorimeter is an instrument used for chemical analysis by comparing a liquid’s color with standard colors. in an experiment, a scientist used two colorimeters and noted the readings. the first colorimeter showed consistent readings that were five points lower than the actual reading. the second colorimeter provided readings that were the same as the actual reading. which two statements are implications of these readings? a.) the first colorimeter is reliable but not valid b.) the second colorimeter is valid and reliable c.) both of the colorimeters are valid and reliable d.) the reading of the first colorimeter can be used without repeating the experiment e.)the readings of the second colorimeter aren’t reliable and can’t be used for the experiment.
Answers: 1
Biology, 21.06.2019 20:00, nmoareah
Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis. b. the primary role of microbes on the planet involves causing disease in animals and humans. c. microbes produce vitamins in the intestines. d. microbes play a role in breaking down waste and decomposing dead organisms.
Answers: 1
Biology, 21.06.2019 20:40, jaycie16
Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling
Answers: 3
Biology, 22.06.2019 07:30, gildedav001
Nh3 +02-no + h20 is unbalanced what is the balanced equation
Answers: 2
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